CheckPoint Demos Due Today: DDD

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CheckPoint Demos Due Today DDD2Due Next
Class 1st Half of Mythical Man Month, HW 6

• Testing
• Bio Break / Move to Lab
• Checkpoint Demos (cont.)

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IBMs Testing Phases
Integration Test ? Function Test
Unit Test
System Test
System Test
Validation Test
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Testing You want to find bugs

• You test to find bugs
• Good test cases find new bugs
• A successful test finds bugs.

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Some testing principles

• Test traceable to customer requirements
• Plan your test
• Use the 80-20 rule (pareto principle)
• Systematically increase testing scope
• Full path coverage is not possible
• Use third party testing when possible

Source Adapted from Pressman who adapted from
Davis 1995.
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Ideally

• Each test should have a different purpose
• Each test should be executed separately

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White Box Black Box Testing

• White box test internal logical paths
• Black box test at the software interface

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Test Plans

• Establish test objectives
• Design test cases
• Write test cases
• Test test cases
• Execute tests
• Evaluate results

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Important Testing Concepts

• Regression Testing
• Stress Testing
• Big-Bang Testing (avoid for large projects)

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How to do a Demo

• Tell them what youre going to show them
• Show them
• Tell them what you showed them
• Be prepared to
• Cope with Murphys Law
• Address customer hot buttons / needs
• Answer questions on the fly, get interrupted
• Record feedback/suggestions for improvement